edited by William M. Sale
Holt, Rinehart and Winston, 1961
Buku Teks
edited by John L. Bradley and Martin Stevens
Rinehart and Winston, 1968
Buku Teks
Walcutt, C.C. (Charles Child), author
Macmillan Company, 1962
Buku Teks
Macmillan, 1937, 1949
Buku Teks
edited by Richard E. Hughes, P. Albert Duhamel
Prentice Hall, 1964
Buku Teks